soc: qcom: glink: Exit from TX worker function in error cases

In the TX worker function, it is possible to enter into an infinite loop
if the transport repeatedly fails to transmit data.

If this case occurs, log an error message and exit the loop.

Change-Id: I2f5017aa79e9bd2843882fe2d4b1d64ad32c50d1
Signed-off-by: Steven Cahail <scahail@codeaurora.org>